refactor: Update Live class to handle pathlib.Path object for `dv…

…cyaml` argument.

src/dvclive/live.py

@@ -82,7 +82,7 @@ def __init__(
         resume: bool = False,
         report: Literal["md", "notebook", "html", None] = None,
         save_dvc_exp: bool = True,
-        dvcyaml: Optional[str] = "dvc.yaml",
+        dvcyaml: Optional[str, Path] = "dvc.yaml",
         cache_images: bool = False,
         exp_name: Optional[str] = None,
         exp_message: Optional[str] = None,
@@ -104,11 +104,11 @@ def __init__(
                 part of `Live.end()`. Defaults to `True`. If you are using DVCLive
                 inside a DVC Pipeline and running with `dvc exp run`, the option will be
                 ignored.
-            dvcyaml (str | None): where to write dvc.yaml file, which adds DVC
+            dvcyaml (str | Path | None): where to write dvc.yaml file, which adds DVC
                 configuration for metrics, plots, and parameters as part of
                 `Live.next_step()` and `Live.end()`. If `None`, no dvc.yaml file is
                 written. Defaults to `"dvc.yaml"`. See `Live.make_dvcyaml()`.
-                If a string like `"subdir/dvc.yaml"`, DVCLive will write the
+                If a string or Path like `"subdir/dvc.yaml"`, DVCLive will write the
                 configuration to that path (file must be named "dvc.yaml").
                 If `False`, DVCLive will not write to "dvc.yaml" (useful if you are
                 tracking DVCLive metrics, plots, and parameters independently and
@@ -265,11 +265,16 @@ def _init_dvc(self):  # noqa: C901
             self._include_untracked.append(self.dir)
 
     def _init_dvc_file(self) -> str:
-        if isinstance(self._dvcyaml, str):
-            if os.path.basename(self._dvcyaml) == "dvc.yaml":
-                return self._dvcyaml
-            raise InvalidDvcyamlError
-        return "dvc.yaml"
+        if self._dvcyaml is None or isinstance(self._dvcyaml, bool):
+            return "dvc.yaml"
+        if isinstance(self._dvcyaml, Path):
+            self._dvcyaml = str(self._dvcyaml)
+        if (
+            isinstance(self._dvcyaml, str)
+            and os.path.basename(self._dvcyaml) == "dvc.yaml"
+        ):
+            return self._dvcyaml
+        raise InvalidDvcyamlError
 
     def _init_dvc_pipeline(self):
         if os.getenv(env.DVC_EXP_BASELINE_REV, None):
@@ -334,6 +339,8 @@ def _init_test(self):
         """
         with tempfile.TemporaryDirectory() as dirpath:
             self._dir = os.path.join(dirpath, self._dir)
+            if isinstance(self._dvcyaml, Path):
+                self._dvcyaml = str(self._dvcyaml)
             if isinstance(self._dvcyaml, str):
                 self._dvc_file = os.path.join(dirpath, self._dvcyaml)
             self._save_dvc_exp = False

tests/test_make_dvcyaml.py

@@ -2,6 +2,7 @@
 
 import pytest
 from PIL import Image
+from pathlib import Path
 
 from dvclive import Live
 from dvclive.dvc import make_dvcyaml
@@ -423,7 +424,7 @@ def test_warn_on_dvcyaml_output_overlap(tmp_dir, mocker, mocked_dvc_repo, dvcyam
 
 @pytest.mark.parametrize(
     "dvcyaml",
-    [True, False, "dvc.yaml"],
+    [True, False, "dvc.yaml", Path("dvc.yaml")],
 )
 def test_make_dvcyaml(tmp_dir, mocked_dvc_repo, dvcyaml):
     dvclive = Live("logs", dvcyaml=dvcyaml)